Source:http://linkedlifedata.com/resource/umls/id/C0001471
MSH: A class of cell surface receptors that prefer ADENOSINE to other endogenous PURINES. Purinergic P1 receptors are widespread in the body including the cardiovascular, respiratory, immune, and nervous systems. There are at least two pharmacologically distinguishable types (A1 and A2, or Ri and Ra).,NCI: One of the purinergic P1 receptors that prefers adenosine to other endogenous purines.